These general purpose disposable P95 respirators are oil-proof, have an exhalation valve, and filter nuisance odors. They are used where there is high risk of exposure to oil splash, odors, and airborne particles, including woodworking, demolition, and food manufacturing. P95 respirators are oil proof and filter at least 95% of airborne particles. The exhalation valve opens automatically when the wearer breaths out to allow breath to exit the mask quickly, keeping the wearer cooler and more comfortable. The valve automatically closes when the wearer inhales to ensure all air breathed in is filtered. These respirators reduce or eliminate nuisance odors, such as organic vapors and acid gas, that are found in demotion work and food manufacturing.